CN109270521A - A kind of ATC response process method based on comprehensive avionics platform - Google Patents
A kind of ATC response process method based on comprehensive avionics platform Download PDFInfo
- Publication number
- CN109270521A CN109270521A CN201811009632.9A CN201811009632A CN109270521A CN 109270521 A CN109270521 A CN 109270521A CN 201811009632 A CN201811009632 A CN 201811009632A CN 109270521 A CN109270521 A CN 109270521A
- Authority
- CN
- China
- Prior art keywords
- signal
- pulse
- ask
- atc
- rising edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
Abstract
The invention discloses a kind of ATC response process methods based on comprehensive avionics platform, and intermediate-freuqncy signal input is obtained ask signal by mixing and filtering respectively, obtains ask_pre signal by envelope detection；The ask signal is decoded for calibration pulse: including conventional decoding and pre-decode.The present invention is handled by pre-decode, answer signal can be exported in advance, transmitting path timing requirements are cooperated to open power amplifier switch and transceiver toggle switch in advance again, if until P4 judges that position detection to there are P4 pulses or conventional decoding to indicate in vain, turns off answer signal.Relative to existing ATC response process method, ATC response process method provided by the invention under comprehensive avionics platform, consider each treatment process, the request signal input of antenna port~answer signal output, calculating total response delay is 3.4us, guarantees the delay requirement of S mode answering machine normal mode response under comprehensive avionics platform.
Description
Technical field
The present invention relates to a kind of ATC response process methods based on comprehensive avionics platform.
Background technique
ATC answering is by antenna interface unit, general transceiver module, general signal processing mould under comprehensive avionics platform
The parts such as block, comprehensive display and control terminal form, and wherein ATC response handling program resides in the FPGA in general signal processing module
In, it is responsible for completion intermediate-freuqncy signal and turns baseband signal, decodes request signal, encodes answer signal and control general transceiver module and day
Line interface unit sends answer signal.
Existing ATC response process method, the secondary radar answering equipment suitable for discrete avionics platform navigate comprehensive
Under level platform, it is intermediate-freuqncy signal that general transceiver module, which is exported to signal processing FPGA, and FPGA needs first to carry out at intermediate-freuqncy signal
Reason (mixing, filtering and thresholding judgement), can make response delay increase 0.7us, Wu Faman using existing ATC response process method
The requirement (3 ± 0.5us of index request of normal mode response delay) that sufficient S mode answering machine is delayed to normal mode response, this
Invention is related to a kind of ATC response process method based on comprehensive avionics platform, and this method is suitable for integrating two avionics platform
Secondary radar answering equipment, design pre-decode processing, can export answer signal, then cooperate transmitting path timing requirements by power amplifier in advance
Switch and transceiver toggle switch are opened in advance, can guarantee that request signal input~answer signal output of antenna port meets S
The requirement (3 ± 0.5us of index request of normal mode response delay) that mode answering machine is delayed to normal mode response.
Existing ATC response process method, the secondary radar answering equipment suitable for discrete avionics platform, at this method
For reason timing as shown in Figure 1, being input to the hardware link time-consuming 0.2us that FPGA baseband signal inputs from antenna first, next is conventional
Mode decoding needs to judge request signal with the presence or absence of P4 pulse, since P3/P4 pulse spacing tolerance is 2 ± 0.4us, so often
Scale formula decodes process time-consuming 2.4us and goes out to decode mark, finally considers each treatment process, the request signal of antenna port is defeated
Enter~answer signal output, calculating total response delay is 3.4us, meets S mode answering machine and is delayed to normal mode response
The requirement 3 ± 0.5us of index request of delay (normal mode response)；
Unlike the ATC answering equipment under ATC answering equipment and discrete avionics platform under comprehensive avionics platform,
It is intermediate-freuqncy signal that general transceiver module, which is exported to signal processing FPGA, and FPGA needs first to carry out IF signal processing (mixing, filter
Involve thresholding judgement), therefrom frequency demodulated signal exports ASK pulse time-consuming 0.7us, so existing discrete ATC response is set
After standby upper processing method is applied on the ATC answering equipment under comprehensive avionics platform, calculating total response delay is
4.1us is unable to satisfy the requirement (index request 3 of normal mode response delay that S mode answering machine is delayed to normal mode response
±0.5us)。
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provides a kind of ATC reply process based on comprehensive avionics platform
Method.
The technical scheme adopted by the invention is that: a kind of ATC response process method based on comprehensive avionics platform, by intermediate frequency
Signal input obtains ask signal by mixing and filtering respectively, obtains ask_pre signal by envelope detection；The ask signal
It is decoded for calibration pulse: including conventional decoding and pre-decode；The ask_pre signal is for determining whether P4 pulse；Work as inspection
When measuring pre-decode marking signal, then the position of 0.9us starts transponder pulse coding after P3 rising edge of a pulse, and in P3 pulse
Power amplifier switch is opened in the position of 1.5us after rising edge；When detecting conventional decoding marking signal, then judge that position is opened in P4
Transceiver toggle switch；When detecting P4 marking signal, then judges that position terminates transponder pulse coding and closes power amplifier in P4 and open
It closes.
Compared with prior art, the positive effect of the present invention is: the present invention provides the ATC under a kind of comprehensive avionics platform
Response process method is handled by pre-decode, can export answer signal in advance, then transmitting path timing requirements is cooperated to open power amplifier
It closes and transceiver toggle switch is opened in advance, if until P4 judges position detection to there are P4 pulse or conventional decoding mark nothings
Effect then turns off answer signal (including shutdown power amplifier switch and transceiver toggle switch).Relative to the existing reply process side ATC
Method, the ATC response process method provided by the invention under comprehensive avionics platform, considers each treatment process, antenna port
Request signal input~answer signal output, calculating total response delay is 3.4us, guarantees S mould under comprehensive avionics platform
The delay requirement of formula answering machine normal mode response.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is discrete avionics platform ATC reply process timing diagram；
Fig. 2 is comprehensive avionics platform ATC reply process timing diagram；
Fig. 3 is comprehensive avionics platform ATC reply process flow chart.
Specific embodiment
A kind of ATC response process method based on comprehensive avionics platform, handles timing as shown in Fig. 2, process flow such as Fig. 3
It is shown.
The present invention is inputted for intermediate-freuqncy signal, and design output two-way TTL signal, the first via is obtained by mixing and filtering
Ask signal, time-consuming 0.7us, the second tunnel obtain ask_pre signal by envelope detection, and time-consuming 0.2us, wherein the first via is used for
Calibration pulse decoding (including normal mode decoding and pre-decode), the second tunnel is for determining whether P4 pulse.
Encoding the response pulse reaches power amplifier input port by exporting from FPGA after up-conversion, needs the 1.1us time,
Power amplifier is opened to starting completely from switch and needs the 0.5us time, when needing to guarantee that coded pulse reaches power amplifier input port, power amplifier
Start completely, so transponder pulse coding needs power amplifier switch 0.6us in advance.
In order to not influence the complete reception of P4 pulse, transceiver toggle switch needs after having judged with the presence or absence of P4 pulse
It could open.
This method carries out the realization of decoding algorithm by FPGA:
Step1: pre-decode mark generates process:
1) to ask signal, the anti-narrow processing of pulse is carried out, judgement meets pulsewidth >=0.5us pulse and generates pre- forward position letter
Number ale_pre；
2) judge two neighboring rising edge signal whether meet P1/P3 spacing (mode A: 8 ± 0.4us, C mode: 21 ±
Index 0.4us)；
If 3) meet P1/P3 spacing condition, the position of 0.85us generates pre-decode mark after ask (P3 pulse) rising edge
Will signal.
Step2: conventional decoding mark generates process:
1) to ask signal, the anti-wide anti-narrow processing of pulse is carried out, judgement meets pulsewidth within the scope of 0.5us~1.2us
Pulse generates rising edge signal ale；
2) ale is delayed to obtain ale_dly, after making ale_dly appear in the P4 rising edge of a pulse of ask_pre
At 0.3us；
3) judge two neighboring rising edge signal whether meet P1/P3 spacing (mode A: 8 ± 0.4us, C mode: 21 ±
Index 0.4us), while judging ask_pre with the presence or absence of P4 pulse；
If 4) meet P1/P3 spacing condition and there is no P4 pulses, judge that position generates decoding marking signal in P4；
If 5) meet P1/P3 spacing condition and there are P4 pulses, judge that position generates P4 marking signal in P4.
Step3: encoding the response process:
1) pre-decode marking signal is detected, then the position of 0.9us starts transponder pulse after ask (P3 pulse) rising edge
Coding；
2) pre-decode marking signal is detected, then the position opening power amplifier of 1.5us is opened after ask (P3 pulse) rising edge
It closes, pulse code shifts to an earlier date power amplifier switch 0.6us, and when meeting coded pulse arrival power amplifier input port, power amplifier starts completely
System requirements；
3) it detects conventional decoding marking signal, then judges that transceiver toggle switch is opened in position in P4, meet transmitting-receiving switching
Switch does not influence the complete received system requirements of P4 pulse；
4) P4 marking signal is detected, then P4 judges that position terminates transponder pulse coding and closes power amplifier switch.
Claims (4)
1. a kind of ATC response process method based on comprehensive avionics platform, it is characterised in that: pass through intermediate-freuqncy signal input respectively
Mixing and filtering obtain ask signal, obtain ask_pre signal by envelope detection；The ask signal is translated for calibration pulse
Code: including conventional decoding and pre-decode；The ask_pre signal is for determining whether P4 pulse；When detecting pre-decode mark
When signal, then the position of 0.9us starts transponder pulse coding, and the 1.5us after P3 rising edge of a pulse after P3 rising edge of a pulse
Position open power amplifier switch；When detecting conventional decoding marking signal, then judge that transceiver toggle switch is opened in position in P4；
When detecting P4 marking signal, then judge that position terminates transponder pulse coding and closing power amplifier switch in P4.
2. a kind of ATC response process method based on comprehensive avionics platform according to claim 1, it is characterised in that: institute
State the generation process of pre-decode marking signal are as follows:
1) to ask signal, the anti-narrow processing of pulse is carried out, pulsewidth >=0.5us pulse generates pre- rising edge signal ale_pre；
2) when two neighboring rising edge signal meets the index of P1/P3 spacing, then after P3 rising edge of a pulse 0.85us position
Generate pre-decode marking signal.
3. a kind of ATC response process method based on comprehensive avionics platform according to claim 1, it is characterised in that: institute
State the generation process of conventional decoding marking signal are as follows:
1) to ask signal, the anti-wide anti-narrow processing of pulse is carried out, pulse of the pulsewidth within the scope of 0.5us~1.2us generates forward position
Signal ale；
2) ale is delayed to obtain ale_dly, makes ale_dly present in 0.3us after the P4 rising edge of a pulse of ask_pre；
3) when two neighboring rising edge signal meets the index of P1/P3 spacing, judge ask_pre with the presence or absence of P4 pulse: if not
There are P4 pulses, then judge that position generates decoding marking signal in P4；P4 pulse if it exists then judges that position generates P4 mark in P4
Will signal.
4. a kind of ATC response process method based on comprehensive avionics platform according to claim 2 or 3, it is characterised in that:
The index of the P1/P3 spacing refers to mode A: 8 ± 0.4us, C mode: 21 ± 0.4us.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009632.9A CN109270521B (en) | 2018-08-31 | 2018-08-31 | ATC response processing method based on comprehensive avionics platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009632.9A CN109270521B (en) | 2018-08-31 | 2018-08-31 | ATC response processing method based on comprehensive avionics platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109270521A true CN109270521A (en) | 2019-01-25 |
| CN109270521B CN109270521B (en) | 2020-06-23 |
Family
ID=65154877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811009632.9A Active CN109270521B (en) | 2018-08-31 | 2018-08-31 | ATC response processing method based on comprehensive avionics platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109270521B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687507A (en) * | 2019-10-18 | 2020-01-14 | 四川九洲空管科技有限责任公司 | Transponder sidelobe suppression judgment method, device and medium based on FPGA |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100013700A1 (en) * | 2005-06-03 | 2010-01-21 | Space Engineering S.P.A. | Active transponder, particularly for synthetic aperture radar, or sar, systems |
| EP2244098A1 (en) * | 2009-04-20 | 2010-10-27 | Universität Duisburg-Essen | A master transceiver apparatus and a slave transceiver apparatus for determining a range information |
| CN102435982A (en) * | 2011-09-09 | 2012-05-02 | 陕西长岭电子科技有限责任公司 | Three-mode blank pipe responder and method for detecting and distinguishing three-mode interrogation signal |
| CN106772350A (en) * | 2017-01-16 | 2017-05-31 | 西安电子科技大学 | The method that radar detection and communications are realized based on linear FM signal |
| CN107966699A (en) * | 2017-11-23 | 2018-04-27 | 中国电子科技集团公司第四十研究所 | A kind of emitter of aviation secondary radar signals and coding method |
| CN108398679A (en) * | 2018-03-01 | 2018-08-14 | 北京众亿锐达科技发展有限公司 | S mode answering machine and its design method based on the reconstruct of avionics comprehensive framework |
-
2018
- 2018-08-31 CN CN201811009632.9A patent/CN109270521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100013700A1 (en) * | 2005-06-03 | 2010-01-21 | Space Engineering S.P.A. | Active transponder, particularly for synthetic aperture radar, or sar, systems |
| EP2244098A1 (en) * | 2009-04-20 | 2010-10-27 | Universität Duisburg-Essen | A master transceiver apparatus and a slave transceiver apparatus for determining a range information |
| CN102435982A (en) * | 2011-09-09 | 2012-05-02 | 陕西长岭电子科技有限责任公司 | Three-mode blank pipe responder and method for detecting and distinguishing three-mode interrogation signal |
| CN106772350A (en) * | 2017-01-16 | 2017-05-31 | 西安电子科技大学 | The method that radar detection and communications are realized based on linear FM signal |
| CN107966699A (en) * | 2017-11-23 | 2018-04-27 | 中国电子科技集团公司第四十研究所 | A kind of emitter of aviation secondary radar signals and coding method |
| CN108398679A (en) * | 2018-03-01 | 2018-08-14 | 北京众亿锐达科技发展有限公司 | S mode answering machine and its design method based on the reconstruct of avionics comprehensive framework |
Non-Patent Citations (3)
| Title |
|---|
| 张帆: "基于FPGA的航电总线适配器设计", 《中国优秀博硕士学位论文全文数据库 (硕士) 信息科技辑》 * |
| 徐科华: "基于射频综合的综合航电系统介绍", 《民用飞机设计与研究》 * |
| 王丹宇: "基于FPGA的综合航电控制接口模块设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687507A (en) * | 2019-10-18 | 2020-01-14 | 四川九洲空管科技有限责任公司 | Transponder sidelobe suppression judgment method, device and medium based on FPGA |
| CN110687507B (en) * | 2019-10-18 | 2021-09-14 | 四川九洲空管科技有限责任公司 | Transponder sidelobe suppression judgment method, device and medium based on FPGA |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109270521B (en) | 2020-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738931B (en) | IRIG-B (Inter-Range Instrumentation Group-B) code time hack device and time hack method thereof | |
| US4604745A (en) | Method of searching fault locations in digital transmission line | |
| CN102298146A (en) | Method for decoding secondary radar signal | |
| CN103199944A (en) | Detection method and detection device of automatic dependent surveillance-broadcast | |
| CN109270521A (en) | A kind of ATC response process method based on comprehensive avionics platform | |
| CN107637023A (en) | For transmitting the method for message, transceiver and electronic control unit for motor vehicle in data highway system | |
| CN105549487A (en) | Digital signal edge delay correction system and method | |
| CN102967822B (en) | Method and system for automatically detecting fault of RS-485 chip | |
| US6768445B1 (en) | Device and method for SPR detection in a mode-s transponder | |
| CN101026603B (en) | Date transmitting/receiving apparatus and control method thereof | |
| CN103177479A (en) | Road side equipment and data processing method in road side equipment | |
| CN116545470A (en) | Decoding method of S response signal decoder based on PDW and FPGA implementation device | |
| CN104953985B (en) | A kind of digital filter circuit being applied in Long line transmission system | |
| CN116896429B (en) | Communication signal self-adaptive modulation system and modulation method based on two buses | |
| CN104682981A (en) | Decoding board of ADS-B (automatic dependent surveillance broadcast) receiver | |
| CN101610570B (en) | Communication method and device for adapting to multiple speeds for dual port AISG tower amplifier | |
| CN104185131A (en) | communication system and transmission method thereof | |
| CN109828247B (en) | Method and device for simulating target signal in near zone of code phase modulation pulse Doppler fuze | |
| US4514840A (en) | Data transmission systems for full duplex communication | |
| US20210119838A1 (en) | Repeater and relay method for the same | |
| CN105743872A (en) | Data transmission system and automatic adjustment method of PCM communication protocol | |
| CN206341238U (en) | A kind of modulator for AIS systems | |
| CN110224715A (en) | Digital isolator based on miniature transformer | |
| CN101888241B (en) | Method, device and equipment for detecting second pulse input signal inversion and automatically correcting error | |
| CN201663587U (en) | Transmission interface circuit of single transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |